React Tutorial - Learn React JS-Course Lessons #7-Form Validation and Errors-Learn ReactJS

React Tutorial - Learn React JS - Course Lessons #7 - React Forms - Validations and Errors - Learn ReactJS

React terms : Form, Form Validation, Validating Input Fields, Errors, Form Errors, Error Messages, input fields, text fields, Props, onChange, currentTarget, currentTarget.name, currentTarget.value, React state, Disable submit button for invalid form, validate on change in value, validate onBlur

Link of the video on Input Fields with React - https://www.youtube.com/watch?v=6ATS2Hpg3lI

Link of the video on Dropdown, Radio and Checkboxes in React - https://youtu.be/wKbhKlLe4Vc

Learn how to validate the input fields in a form by defining an errors JSON in state and populating it with error messages.

Sample Codes explained in the tutorial are

• Validate the form when submit button is clicked
• Disable the submit button if form is invalid and enable it when the form is valid
• Validate a field when it loses focus i.e. on onBlur event
• Validate a field when its value changes i.e. on onChange event

With Sample Codes and Exercises, do the exercises and understand the various validation techniques.

Learn complete React in this video tutorial series. A must watch for all ReactJS beginners and learners. With lots of samples, code, practice questions and projects, learn and master React and become an awesome front end developer.
00:00 Validating forms in React
01:15 Sample Code : Implementing Form Validation on Submit
14:14 Sample Code : Adding more Validations to the React Form
20:26 Code Exercise : Disable Submit button if Form is InValid
23:20 Code Exercise : Validate field when it loses focus

Complete React Lessons and ReactJS playlist -
https://www.youtube.com/playlist?list=PLC8jf7P7lrixhadKw5_hc0jjaPPMroUyC

#react tutorial #react

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How native is React Native? | React Native vs Native App Development

If you are undertaking a mobile app development for your start-up or enterprise, you are likely wondering whether to use React Native. As a popular development framework, React Native helps you to develop near-native mobile apps. However, you are probably also wondering how close you can get to a native app by using React Native. How native is React Native?

In the article, we discuss the similarities between native mobile development and development using React Native. We also touch upon where they differ and how to bridge the gaps. Read on.

A brief introduction to React Native

Let’s briefly set the context first. We will briefly touch upon what React Native is and how it differs from earlier hybrid frameworks.

React Native is a popular JavaScript framework that Facebook has created. You can use this open-source framework to code natively rendering Android and iOS mobile apps. You can use it to develop web apps too.

Facebook has developed React Native based on React, its JavaScript library. The first release of React Native came in March 2015. At the time of writing this article, the latest stable release of React Native is 0.62.0, and it was released in March 2020.

Although relatively new, React Native has acquired a high degree of popularity. The “Stack Overflow Developer Survey 2019” report identifies it as the 8th most loved framework. Facebook, Walmart, and Bloomberg are some of the top companies that use React Native.

The popularity of React Native comes from its advantages. Some of its advantages are as follows:

• Performance: It delivers optimal performance.
• Cross-platform development: You can develop both Android and iOS apps with it. The reuse of code expedites development and reduces costs.
• UI design: React Native enables you to design simple and responsive UI for your mobile app.
• 3rd party plugins: This framework supports 3rd party plugins.
• Developer community: A vibrant community of developers support React Native.

Why React Native is fundamentally different from earlier hybrid frameworks

Are you wondering whether React Native is just another of those hybrid frameworks like Ionic or Cordova? It’s not! React Native is fundamentally different from these earlier hybrid frameworks.

React Native is very close to native. Consider the following aspects as described on the React Native website:

• Access to many native platforms features: The primitives of React Native render to native platform UI. This means that your React Native app will use many native platform APIs as native apps would do.
• Near-native user experience: React Native provides several native components, and these are platform agnostic.
• The ease of accessing native APIs: React Native uses a declarative UI paradigm. This enables React Native to interact easily with native platform APIs since React Native wraps existing native code.

Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.

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Top Reasons To Choose ReactJS

The principal concept at the back of ReactJS improvement become to discover a framework that allows in constructing a dynamic library with excessive performance. An appropriate instance of this becomes to offer newsfeeds on equal time whilst human beings are chatting. Optimization of the improvement technique and bringing on JavaScript become all that become required at that time. ReactJS is greater like an open-supply JavaScript library in place of a framework. Used for constructing superb consumer interfaces, it is ideal for rendering performance.

Reasons to pick out React.js/React/ReactJS

Out of the several reasons React.JS can be future of hybrid mobile app, some of the interesting ones are:

• React’s virtual DOM is faster as it only refreshes a part of the page, rather than the conventional full refresh model
• Easy to create UI Test Cases
• Easy to reuse the code components
• It can display components in large amounts quickly and efficiently
• Specialized chrome extension makes it easy to debug
• Any data changes require manual processing
• It is view oriented
• It’s one of the top JavaScript frameworks among ReactJS developers and is growing
• Rendering the code from the server to browser will eventually improve the SEO of the webpage
• It improves debugging speed, making it easier for developers
• It covers both iOS and Android
• As it makes use of reusable components, it becomes easy for the hybrid applications to render natively
• React Native UI components can be applied without re-writing to an existing app’s code
• It provides support for both front-end and server-side

Cons of ReactJS Making use of JSX which permits blending HTML with JavaScript is taken into consideration a critical drawback through ReactJS builders as it’s far complicated and has a steep mastering curve. Join ReactJS Online Training and learn the regular launch of the latest tools, documentation nonetheless stays incomplete, which makes it tough for brand spanking new ReactJS builders to apprehend and code. With the excessive tempo of improvement, ReactJS builders have to quickly research new methods of improvement. With rapid evolution, now no longer each developer is capable of preserve tempo. What’s our tackle it?

AngularJS is a featured framework at the same time as ReactJS is a library. You will need to write much less code with ReactJS and it even plays higher because of the implementation of digital DOM. As React has simply commenced its network is developing. Node.js is a JavaScript runtime that is rapid and lightweight. It may be used to create rapid and scalable networking packages. With Client-Side statistics rendering and a top configuration, ReactJS is an outright desire of JavaScript framework Developers.

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React Tutorial - Learn React JS-Course Lessons #7-Form Validation and Errors-Learn ReactJS

React Tutorial - Learn React JS - Course Lessons #7 - React Forms - Validations and Errors - Learn ReactJS

React terms : Form, Form Validation, Validating Input Fields, Errors, Form Errors, Error Messages, input fields, text fields, Props, onChange, currentTarget, currentTarget.name, currentTarget.value, React state, Disable submit button for invalid form, validate on change in value, validate onBlur

Link of the video on Input Fields with React - https://www.youtube.com/watch?v=6ATS2Hpg3lI

Link of the video on Dropdown, Radio and Checkboxes in React - https://youtu.be/wKbhKlLe4Vc

Learn how to validate the input fields in a form by defining an errors JSON in state and populating it with error messages.

Sample Codes explained in the tutorial are

• Validate the form when submit button is clicked
• Disable the submit button if form is invalid and enable it when the form is valid
• Validate a field when it loses focus i.e. on onBlur event
• Validate a field when its value changes i.e. on onChange event

With Sample Codes and Exercises, do the exercises and understand the various validation techniques.

Learn complete React in this video tutorial series. A must watch for all ReactJS beginners and learners. With lots of samples, code, practice questions and projects, learn and master React and become an awesome front end developer.
00:00 Validating forms in React
01:15 Sample Code : Implementing Form Validation on Submit
14:14 Sample Code : Adding more Validations to the React Form
20:26 Code Exercise : Disable Submit button if Form is InValid
23:20 Code Exercise : Validate field when it loses focus

Complete React Lessons and ReactJS playlist -
https://www.youtube.com/playlist?list=PLC8jf7P7lrixhadKw5_hc0jjaPPMroUyC

#react tutorial #react

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React Tutorial - Learn React JS - Course Lessons #5 - Input Fields and Form -Learn ReactJS

React Tutorial - Learn React JS - Course Lessons #5 - Input Fields and Form - Learn ReactJS

React terms : Controlled Component, props, forms, input fields, text fields, Props, onChange, currentTarget, currentTarget.name, currentTarget.value, React state

A common approach used is to keep the same name for the input fields (text fields) that have been provided to the JSON linked to the form. Then use onchange, currentTarget along with currentTarget.name and currentTarget.value to update the state and thereby the form.

Define a form with input fields (text fields) and handle them in React. define then as JSX using HTML and then integrate them in ReactJS. Lift the state up and make a controlled component. Implement add and edit.

With Sample Codes and Exercises, do the exercises and understand the code in detail and make forms with a main component controlling the form and providing its initial values.

Learn complete React in this video tutorial series. A must watch for all ReactJS beginners and learners. With lots of samples, code, practice questions and projects, learn and master React and become an awesome front end developer.
00:00 Input Fields in React
09:58 Main Component and Form Component
15:13 Sample Code 1a : Add and display
22:38 Sample Code 1b : Implement Edit
31:36 Sample Code 2a : Courses Form Component Exercise
33:59 Sample Code 2b : Courses Form Component Exercise

Complete React Lessons and ReactJS playlist -
https://www.youtube.com/playlist?list=PLC8jf7P7lrixhadKw5_hc0jjaPPMroUyC

#react #react tutorial #reactjs